F5 warns its customers of tens of flaws in its products
Vulnerabilities mentionedAll →
| CVE | Vulnerability | CVSS | EPSS | Flags | Affected | Exposure | Published |
|---|---|---|---|---|---|---|---|
| CVE-2022-1388 | Unauthenticated RCE in F5 BIG-IP via Missing Authentication F5 BIG-IP contains a critical missing-authentication flaw (CWE-306) in its iControl REST control plane: an unauthenticated attacker with network reachability to the management interface, or to self IPs exposing the REST service on TCP 443, can bypass authentication completely. By sending specially crafted HTTP requests, the attacker gains the ability to execute arbitrary code, create or delete files, and disable services, effectively achieving full takeover of the load balancer or security appliance and the traffic it handles. All F5 BIG-IP deployments running unpatched software are affected; the provided data does not enumerate exact version ranges, which are listed in F5's May 2022 security advisory. The flaw was added to CISA's KEV catalog on 2022-05-10 with known ransomware use, and EPSS assigns a 100% probability of exploitation within 30 days (100th percentile), indicating active in-the-wild exploitation. No public proof-of-concept is catalogued in the provided data, but the KEV listing and known ransomware use confirm real-world attacks. Do: Upgrade affected F5 BIG-IP systems to the fixed releases listed in F5's May 2022 security advisory (K23605340) immediately, prioritizing appliances whose management interface or self IPs on TCP 443 are reachable from untrusted networks; as an interim mitigation, block untrusted access to the management interface and the iControl REST service. Because this flaw is in CISA's KEV catalog with known ransomware use, also hunt for signs of compromise (unexpected files, disabled services, unknown persistence) on any system that was exposed before patching. | 9.8 | 100% | KEV ransomware PoC ×4 |
| large~10,000 internet-exposed BIG-IP systems (public scans at disclosure counted 8k-10k+), with a far larger installed base behind firewalls | |
| CVE-2022-27806 | On all versions of 16.1.x, 15.1.x, 14.1.x, 13.1.x, 12.1.x, and 11.6.x of F5 BIG-IP Advanced WAF, ASM, and ASM, and F5 BIG-IP Guided Configuration (GC) all versi On all versions of 16.1.x, 15.1.x, 14.1.x, 13.1.x, 12.1.x, and 11.6.x of F5 BIG-IP Advanced WAF, ASM, and ASM, and F5 BIG-IP Guided Configuration (GC) all versions prior to 9.0, when running in Appliance mode, an authenticated attacker assigned the Administrator role may be able to bypass Appliance mode restrictions, utilizing command injection vulnerabilities in undisclosed URIs in F5 BIG-IP Guided Configuration. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated NVD description · AI analysis pending | 7.2 group max | 2% |
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Full article520 words · extracted from securityaffairs.com · click to collapse
Cybersecurity provider F5 released security patches to address tens of vulnerabilities affecting its products.
Security and application delivery solutions provider F5 released its security notification to inform customers that it has released security updates from tens of vulnerabilities in its products.
The company addressed a total of 43 vulnerabilities, the most severe one is a critical issue tracked as CVE-2022-1388 (CVSS score of 9.8). An unauthenticated attacker with network access to the BIG-IP system through the management port and/or self IP addresses can exploit the CVE-2022-1388 flaw to execute arbitrary system commands, create or delete files, or disable services.
“This vulnerability may allow an unauthenticated attacker with network access to the BIG-IP system through the management port and/or self IP addresses to execute arbitrary system commands, create or delete files, or disable services. There is no data plane exposure; this is a control plane issue only.” reads the advisory published by the vendor.”
The flaw affects the following versions:
16.1.0 – 16.1.2
15.1.0 – 15.1.5
14.1.0 – 14.1.4
13.1.0 – 13.1.4
12.1.0 – 12.1.6
11.6.1 – 11.6.5
and the vendor addressed it with the release of:
17.0.0
16.1.2.2
15.1.5.1
14.1.4.6
13.1.5
The company provided the following temporary mitigations for customers that cannot install the patched versions:
- Block iControl REST access through the self IP address
- Block iControl REST access through the management interface
- Modify the BIG-IP httpd configuration
F5 also addressed a couple of other important authentication bypass issues, tracked as CVE-2022-25946 and CVE-2022-27806, in BIG-IP Guided Configuration and BIG-IP (ASM, Advanced WAF, APM). Both vulnerabilities could allow attackers to execute arbitrary JavaScript code in the context of the currently logged-in user.
Below the two bugs, both received a CVSS score of 8.7:
- Authenticated F5 BIG-IP Guided Configuration integrity check in Appliance mode vulnerability CVE-2022-25946
- Authenticated F5 BIG-IP Guided Configuration in Appliance mode vulnerability CVE-2022-27806
The vendor also addressed XSS vulnerability, tracked as CVE-2022-28707, in BIG-IP, that received a CVSS score of 8.0.
“A stored cross-site scripting (XSS) vulnerability exists in an undisclosed page of the BIG-IP Configuration utility (also referred to as the BIG-IP TMUI) that allows an attacker to execute JavaScript in the context of the currently logged-in user. (CVE-2022-28707) Impact An authenticated attacker with at least a guest role may exploit this vulnerability by storing malicious HTML or JavaScript code in the BIG-IP Configuration utility.” reads the advisory. “If successful, an attacker can run JavaScript in the context of the currently logged-in user. In the case of an administrative user with access to the Advanced Shell (bash), an attacker can leverage successful exploitation of this vulnerability to compromise the BIG-IP system. This is a control plane issue; there is no data plane exposure.”
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